How do you multiply #(- 2- i \sqrt { 3} ) ( - 2- i \sqrt { 3} )#?
1 Answer
Nov 26, 2017
Explanation:
#•color(white)(x)i^2=(sqrt(-1))^2=-1#
#"expand using FOIL and simplify"#
#=4+i2sqrt3+i2sqrt3+3i^2#
#=1+i4sqrt3#
